Pneumatic tool.



'unrriiin er 'PATENT oFFroE.

REINHULD A. NORLING, OF AURORA, ILLINOIS, ASSIGNOR TO AUROA AUTOMATIU MACHINERY COMPANY, OF AURORA, ILLINOIS, A CORPORATION` GF ILLINOTS.

PNEUMATIC TOOL.

specification of Letters raient.

Ifatented Dec. '6, 1.910.

original application fiiea'iaarch s, ima'seriai no. 547,977. Divided and this appiication filed may 9, 1910.

Serial No. 560,270.

' a citizen of the United States, and a resident Tools; and-I do hereby declare that the foliof the city of Aurora, 'county of Kane, and F.

lowing is a full, clear, .and exact description thereof, reference being had to the accomsaid ears togetherl Theinner end of the panying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to a portable pneumatic tool or hammer of that class embracing a barrel or cylinder, a piston or plunger adapted to move therein, and a controlling valve through which the air or other iiuid under pressure' is idinitted to and permitted' to escape from the opposite ends of the cyliiider 0r barrel to give reeipi-ocatoi'y 'inofe-v ment to the plunger therein.

The invention is illustrated and described.

herein as applied to a riveting hammer, otherwise known as a long stroke hammer, in which the movement of the piston or plunger isgreater than its own length. The main features of the hammer are described in an application filed by me on March 8th, 1910, Serial No. 547,977, en-

titled Pneumatic hammers of4 which the.

present application is :i division.

The invention relates particularly to a hollow head provided at the inner endof the barrel, and to the means for rigidly securing said head to the barrel.

. In the drawings z-Figure 1 is a longitu.

dinal section through the-hammer in a plane containing the axis ofthe barrel or cylinder. Fig. 2 is a cross-section through Fig. 1 on the line 2-2 thereof. Fig. 3 is a cross-section through Fig. 1 on the line 3 3 thereof.` `Fig. 4 is a perspective View of a block to be more 4particularly referred to later.

In that embodiment of my invention'illustrated in the 'accompanying drawings, A iepresents the barrel oi` cylinder of the ham? mer; B, the piston or plunger adapted to reciprocate therein; C, the tool 'carrying spindle, and D, the tool, in this case, a rivetving head.

'Ihe'inner end of the cylinder IA, is externally screw-threaded, as at a, to receive theouter,A internally screw-threaded end of a hollow head E. Said hollow head E closed at 'its inner end, by an end-Wall E1 55 ears or lugs el, e1. Said lugs are provide with openings throu which extends 'a (-.lainpingbolt e3 wliici is adapted to draw main barrel is provided near its end with aseries of longitudinally extending serrations '65 a2 and in said serrations'engage the-serrated end of a block e3 which is located in the slot e, see Figs. 1 and 4) and which is held in rigid engagement .withthe serrations in said main barrel by means of a taper pin e4 70 which is located in openings e, e in the ears or lugs e1 andwhieh engages' in a .hole or opening e in the said block e30. Said opening ef. is arranged eccentrically with respect 'to the axis of the openings e5 so that the 7.5

ta per pin engages between the opposite sides, resl'iectively, of the opening c and of the.

.openings e5 and wedges the block e30 against 'I the` barrel. Said taper pin is held in lace by means of a nut e7 betweenwhich an the :30 outer sui-face ofthe adjacent ear or lu there is interposed a spring washer e8 to 105: said taper pin in position.

The construction described forms a rigid connection between the head and the barrel.` S5

.l claim as my invention ,f

1. In combination with a cylinder and a reciprocating plunger, an extensionof said cylinder embracing a holow head, the end of said cylinder being threaded into t-lie open 'end of said head .and being provided on its outer surface beyond the thread 'Withlongitudinally extending serrations, the longitudinal wall of said head being split at its end to form va recess, a block located'in said l95 recess provided with sei'rtions at'its inner end to 'engage the serrations' on the outer surface of said cylinder, meansl for wedging said block against the cylinder and forl locking it in that position, and means for drawing the split sections of said head together.

Q. In combination with a cylinder and a reciprocating plunger, an extension of s'aid cylinder embracing a hollow head, the end of said cylinder bein threaded into the open en d lof said head an being provided on its the openings in said ears 2 outer Surface he'ond the thread with longitudinally exten ing serrations, the.1'ong1t u dinal wall of said head being spilt at -lts open end to. for'm a recess, lugs or ears l 5 formed at each side of said recess provided with transverse openings, a block located in said recess provided with -a transverse opening, said block having a serrated end adapted to engage the serrationson the outer surface of said cylinder, one set "of through saidA earsY being eccentrically arranged with reference to the opening through .said block, a taper pin extending through openings and the openingthrough said block adapted to draw said, hlock against said cylinder-means for locklng sind taper pin in position, and a clamping-holt extending through a4 second pair-of opemngs through said ears adapted to draw said ears together. v

.' In testimony, that I claim the foregoing as my lnverrtionv I alixA my signature in the presence of two Witnesses, this 5th day of lay, A. D.' 1910.

REINHOLD A. VNORLINGr 'Witnesses CLARENCE E. MEHLHOPE, GEORGE R. WILKINS. 

